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stress ratio

    0.01 sec.
stress ratio [′stres ‚rā·shō]
(mechanics)
The ratio of minimum to maximum stress in fatigue testing, considering tensile stresses as positive and compressive stresses as negative.


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s]k[H/D]), (7) where k is the lateral stress ratio which represents the developed lateral radial stress at the cylindrical wall of the compaction cell relative to the axial compressive stress.
L] = number of loading cycles required to produce initial liquefaction corresponding to the cyclic stress ratio, CSR (=cyclic stress required to initiate liquefaction / vertical effective stress in soil) and [theta] = constant representing soil properties and test condition (commonly, [theta]=0.
Initially, the rebars were tested at a stress range of 138 MPa (20 ksi), with the minimum to maximum stress ratio of R = 0.
 
 
 
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